Environment

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Former Pennsylvania Gov. Edward G. Rendell saw firsthand how drilling in the Marcellus Shale helped revive long-depressed towns in parts of his state. He is trying to convert fellow Democrats.

A Chinese health worker takes excrement samples from a chicken at a closed poultry market in Nanjing in east China's Jiangsu province on Saturday, April 6, 2013. Health officials believe humans are contracting the H7N9 bird flu virus through direct contact with infected fowl and say there's no evidence the virus is spreading easily between people. (AP Photo)

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Matthew Warren, the youngest child of the Rev. Rick Warren of the Saddleback Valley Community Church in Lake Forest, Calif., committed suicide, the church said in a statement on Saturday, April 6, 2013. (AP Photo/Saddleback Valley Community Church)

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At the University of Georgia, Bubba Watson competed in only one tournament in his senior season on the golf team. (University of Georgia)

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An illegally tapped maple tree is pictured in northern Maine on Tuesday, March 12, 2013. Forest rangers say the illegal tappers are damaging valuable maple trees before they are harvested for lumber. (AP Photo/Maine Forest Rangers)

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Arnold Schwarzenegger has joined the ranks of high-profile folks eager to warn the world about global warming. (image from Arnold Schwarzenegger)

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"The science on climate change is in, the debate is over and the time for action is now," says Arnold Schwarzenegger, the newest celebrity climate alarmist.

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**FILE** People listen to Lindsey Tucker, Deputy Commissioner of the Department of Vermont Health Access, in Newport, Vt., as she explains the state's health care exchange program on March 20, 2013. (Associated Press)

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In this June 27, 2008, file photo released by China's Xinhua News Agency, the cooling tower of the Yongbyon nuclear complex is demolished in Nyongbyon, also known as Yongbyon, North Korea, in a sign of its commitment to stop making plutonium for atomic bombs. (AP Photo/Xinhua, Gao Haorong, File)